Pocket typewriting machine



Nov., 18,1924. 1,515,663

A K. DIETRICH f POCKET TYPEWRITING MACHINE Filed Sept. L 1925 5Smeets-Sheet 1 D D D D D D D D D D D D D D D D D D D D D D. D D D D D D.D D D D, D D

Inventar:

3 Sheets-Sheet 2 Nov. 18, 1924.

YNov. 18, 1924. y 1,515,663

K. DIETRICH POCKET TYPEWRITING MACHINE Filed sept. 4 .192s 3sheets-sheet s Fig@ 7! 63 l la muuuuumuuuuuuumuuumQanuuuunnu I im um. 8I

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Patented Nov. 18, 1924.

KARL DIETRICH, OF LEIPZIG, GERMANY.

POCKET TYPEWRITING MACHINE.

Application tiled September 4V, 1923.

To all whom it may concern.'

Be it known that I, KARL DIETRICH, a citizen of the German Republic, anda resident of Leipzig, Germany, have invented` a new anduseful ImprovedPocket Typewriting Machine, of which the following is a specitica-tion.

My invention relates to a type-writing machine in which -ordinaryboolrprinting types .are used which are housed resiliently in a framelengthwise shiftable between two ledges, and in which said types can becaused to print on a sheet of paper by means of keys apt to be shiftedintermittently, and with the aid of a suitably arranged ink tape, as isall fully described hereinafter.

My invention is illustrated by way of eX,- ample in the accompanyingdrawing, in which Figure 1 is a vertical longitudinal section throughthe machine, Figure 2 a plan thereof, Figure 3 a cross section in lineM-M of Fig. 2, Figure 4 a rear view of the keys, etc., and Figure 5 aplan of the machanism for the papervfeed. Figure 6 is a longitudinalsection of a modification, drawn to a smaller scale, Figure 7 is a planthereof, and Figure 8 a cross-section.

The frame of the machine consists of a stationary part composed of twoparallel vertical ledges 2 connected at their ends by bows 1, and of amovable part composed of a ledge 8 located on the upper edge of theledges 2 and 0f a rail 4 located between the ledges and having its rimsor edges bentupwards, as shown in Fig. 3. The plate 3 and the rail l areconnected with each other by vertical bolts 5 located near the ends ofthese parts, and the entire movable frame part can be shiftedlongitudinally within and on the stationary one. To each of the verticalledges 2 is secured a. horizontal ledge lying flush with the ledge 3 ofthe movable frame part, which is guided thereby, and to the rear ledge 6is atixed another ledge 7 which fore, a double rack. This member of themachine is broader than the rear ledge 6 and its rear cogs extend freelyover the rear edge of said ledge, whereas its front vcogs extend overthe ledge 3.

rllhis latter ledge (3) is provided with a row of holes, and acorresponding row of holes is provided in the rail 1, and book printingtypes 8 are inserted into the two rows of holes, as shown in Figures 18.The entire row yof types contains the small let- Serial No. 560,820.

ters, the capital ones, and the signs of punctuation andthe like. Eachtype is provided with an angularly bent arm 9 located between it and oneof the vertical plates 2 and having its vertical end directed towardsthe other by .bows 12a and having downwardly and inwardly bent rims, ofwhichthe front rim engages the front rim of .the front ledge 6 and theother engages the cogged rear rim of the rack 7. Atiixed to ,the rearslide 12 is a fiat member 18 forming two lugs 13L and 18", of which thefirst kextends horizontally rearwards, whereas ,thel other extendsdownwards at the side ofthe lug 13a. This lug carries two smallVbearings la carrying in their turn a spline 15 support-r ing two levers16 and 17, of which the first is located between the two bearings,whereas the other which forms a forl is so arranged that the ltwo prongsof the fork lie one'at the left side of the lefthand bearing, the otherat the right side of the righthand bearing, the lever 16 being, thus,located between the two prongs. The two levers .are connected withsprings 18 and 19which tendconstantly to lift the levers, or keep themlifted respectively, and each lever is provided with a key 2O located atits front end; The lever 16 has at its lowerl edge a rounded projection16LL which depresses the type S justbelow it when the lever 16 isdepressed. The breadth of the lever 16 corresponds to the ybreadth ofthe types so that always only one type can be depressed after themovable frame with the types has been accurately ad- Y 4just-ed. iscogged at its two rims, and forms, thereln order to obtain the accurateadjustment 1n a positive manner, the lever 16 is provided with adownwardly extending tooth 21., and at the rear edge ofthe plate 3are'fpro-` vided recesses into each of which the tooth 21 can enter.These recesses liejust behind the types, and the tooth 21 can enter thelrespective recess only if the respective type is in proper positionrelatively to the leverflG. rlhe rack formed by the recessesmentioned atthe rear of the ledge 3 corresponds to the rack at the front edge oftheledge 7, and

the tooth 21 which at any rate passes into the respective gap betweentwo cogs of said latter rack can pass into and through the gap below it(of the ledge 3) only if this ledge has been accurately shifted in whichcase the lug 16a of the lever 16 will push upon, and depress, the typeto be printed. The tooth 21 is pointed or wedgeshaped at its end in sucha manner that it assists in adjusting accurately the movable frame ofthe type-writing machine.

The slides 12 are connected at their rightliand side with cords 22guided each over a small roll 23 attached tothe 'stationary verticalledges 2. The other end of each cord is connected with one end of ahorizontal spiral spring 24 extending paralleli); to its adjacent ledge2 outside the same. The lefthand ends of the spring 24 are secured tothe lefthand ends ot the ledges 2. The springs tend constantly to pullthe slides 12 to the right, it they have been shifted from the right tothe leit. Pulling the slides back after such n'iovement is, however,prevented, by a checking device consisting of a lever 25 suspended atthe lug` 13b and being under the pull of a spiral spring causing a pawl28 attached to the ifreeend o-t the lever 25 to engage the gaps betweenthe cogs at the rear edge of the ledge 7. Owing to the pull which thesprings 24 exert on the slides 12 by the intermediary et the cords 22the pawl is turned, but this nievemcnt is limited by a pin 28LL locatedin the lever 25 and passing through a slot provided in said pawl.

V The lever 25 is connected with a vertical rod 29 which extends upwardsthrough the 'l'orked end or' the lever 16 and is provided with a knob30. It the rod 29 is depressed, the lever 25 is turned and the pawl 28is ,moved off the ledge 7 so that the slides 12 can follow the pull ofthe springs lminediately below the levers 16 and 17 transverse member 31is attached to the rod 29, and this latter is, therefore, depressed alsowhen one or the other lever is depressed so that the pawl 28 iswithdrawn and the slides 12 are released also in these cases. But as,when the lever 16 is depressed, its tooth 21 enters into one ot' thegaps at the front edge of the rack 7 and as, when the lever 17 isdepressed, teeth 32 provided thereon enter into two gaps at the rearedge ot said ledge, the slides 12 cannot follow the pull of the springs24 although beingl no more checked by the pawl 28. This latter is actedon directly by a spring 27 attached to the lever 25 and tending to causethe pawl to engage the next gap of the rear rack of the ledge 7 when itis no more under the pull of the springs 24. When then tl e lever 16, or17 respectively, is pressed baclr into its upper or normal position bythe spring 18, or 19 respectively, the pawl 28 engages the gap, situatedabove it, of the rear rack of the ledge 7 as the lever 25 has been drawnupwards by the spring 26 corresponding to the raising of the lever 16,or 17 respectively. Gnly after this engagement the tooth 21,y or theteeth 32 respectively, get disengaged from the respective gap or gaps,and in the same or in the next moment the spring 24 can draw the slides12 farther to the right as much as allowed by the length o the slot inthe pawl 28through which the pin 28a passes, the pawl being now againturned, as already described. The extent of this feed movementcorresponds to the distance between two characters of the writing, orthe spacing respectively.

The object of the lever 16 is to depress the type situated below it, asalready eX- plained, and the object of the lever 17 is to eilect thefeed movement oi"- the slides 12. When these latter have arrived at theend of their path, in the direction te the right, they may be drawn backto the left, into their extreme leitthand position, without actuatingany lever as the pawl 28 is inactive in this direction. The extent ofmotion to the right and to the left may be limited, it desired orpreferred, by adjustable abutment members 33.

Below the types S is stretched between the vertical ledges 2 an inkingtape 34 provided at its ends with hook 34 attached to the end bows 1.The ledges 2 are secured at their ends to a foot 35 into which isinserted a strip 47 of leather or rubber located below the ink tape 34.A sheet o't` paper placed between the ink band and the strip of leather,etc., will receive the imprints of the types when they are depressedsuccessively by the lever 16. The stationary frame in which the movableframe is shifted during the writing is not absolutely stationary, buthinged by connecting members 37 to short standards 36 secured to thetoot 35 at the rear thereof. The stationary frame, or, more precisely,the two trames combined, may, thus, be swung` on these standards inorder to place a sheet of paper below the frames in general and thetypes and the inlring band in particular. The written characters may berendered visible by lifting the trames. similarly to lifting thecarriage of an old Remington type writing machine.

At the front side of the foot 35 is a plurality of rubber rolls 38, andabove them is a long roller 40 which is provided with a correspondingnumber of rubber rings 39. The roller 40 is supported by two flatsprings 41 provided at their ends, and the sheet of paper passed throughbetween the rubber rings 39 and the rubber rolls 38 is held .tast by thepressure which said springs exert. At the righthand end of the roller 40is a plurality of equally distributed recesses co-operatingwith smallflat springs liti 42 forming parts of a stationary angular member 43whereby part rotations of equal length are ensured, these part rotationsbeing effected by al grip 44.

` When using` the machine, first the sheet of paper is inserted betweenthe rolls 38 and the rings 39, as well as between the inking tape 34 andthe strip 47, vwhereafter the slides 12 are withdrawn until contactingwith the lefthand abutment 83. Then the shiftable frame is so adjustedthat the type to be written or printed is located below the lever 16. Tofacilitate this adjustment, the characters are repeated on the uppersurface of the ledge 3, the arrangement being such that the type orcharacter located below the lever 16 is indicated by an ear-like index45 at the row of characters on the ledge 3, the adjusted characterappearing in the ear.

The ledge 3 is shoved to and fro according as the characters arerequired, but the slides 12 are shifted automatically for one gap afterevery depression of the lever 16. The extra space between two words isobtained by depressing the lever 17.

46 are horizontal members attached to the inner side of the rearvertical frame ledges 2 and having sloping ends, especially where theyare directed towards the other end of the machine. The object of thesemembers is to lift the approaching types shifted together with the ledge3` if any one of the spiral springs 10 keeping the types raised shouldhave slackened, the respective type having then a lower position andthere existing consequently the danger that its lower end strikesagainst the horizontal part of the bow 1 at one or the other end of themachine. The sloping end of the respective member 46 engages from belowthe horizontal part of the spring Kholding 9 of the respective type andlifts this latter to normal height so that it does not contact with therespective bow 1.

Arranging all types in one row, entails, of course, a pretty greatlength of the typewriting machine. But it is not indispensably requisiteto arrange them all in one row. They may be divided into, or distributedupon, two or more rows, whereby the further advantage is obtained thatthe slide need not be displaced so much to the right and to the left, asin such a case correspondingly more types are in a favorable positionwith respect to the key concerned, and, furthermore, the writing speedis considerably increased.

A type-writing machine embodying my invention in which the types arearranged in two rows is illustrated by way of eXam ple in Figures 6,7,and 8.

The plate 3 carrying the types 8 is inserted into the large opening 47of the frame 48 and can be shifted transversely thereto.

The frame 48 is supported on theledges2 of the main frame and may beshifted` hef tween them. At the lower` side of the plate 3 are forks 49which ride on ledges50-eux-l tending transversely with respect to theBelow the plate 3 is arrangedA frame 48. also a shaft 52 extending in.the longitudinal direction of the frame 48 and having f secured to oneof its ends an arm 54 provided with a button 53. To the shaft 52 is. y f

shaft and atl its other end with the arm 52 and tends constantly to turnthis arm in such a direction that the plate Bis drawn over the shaft (tothe left in Figure 8),

The shaft 52 can be rotated by a pres` sure on the button 53 whereby theyplate 3 is shifted to the right (Fig. 8), away from the shaft. vWhilein the former position of the plate 3 the types of one row have been solocated thatthe key 16 could -depress the adjusted key of thisl row,lnow the other row of types is insuch a position. The button 58 ispreferably arranged. near the button 11 by which the frame 48 isshifted,in order to facilitate operating the inachine and to render it possibleto. perform the just-described operations.

The arrangement of the types in thetwo i Y rows is preferably such thatthe small letters which are mostly used are locatedM inr the rear row(Fig. 7), whereas the capital,

letters and the other signs are printed by the types in the other orfront row.

I claim:

1. A. type-writing machine, comprising,

in combination, two edge-wise arranged horizontal parallel spacedledges, bowsv con.- necting them 4at theirl ends torform a stationaryframe together with them, amshift'- able frame located between saidledges, and resiliently supported vertical types in this frame, aninking band below saidtypes, in termittently shiftable slides upon .thestia,-

tionary frame, and a key lever on said slides,

as set forth.

2. A type-writing machine, comprising, in combination, two edge-wisearranged horizontalparallel spaced ledges, bows connecting them at theirends to form a stationary frame together with them, two superposedspaced horizontal ledges arrangedhetween the ledges of said stationaryvframe, and members, connecting said other ledges at their ends to. forma shiftable frame together with them, and resiliently supported verticalty aes inthis frame, an inking band below said slides upon thestationary frame, and a key lever on said slides, as set forth.

A type-writing machine, comprising, in

combination, two edge-wise arranged hjorify .f

types, intermittently shiftable zontal parallel spaced ledges, bowsconnecting them at their ends to form a stationary frame together withthem, two superposed spaced horizontal ledges arranged between theledges of said `stationary frame, and members connecting said other`ledges at their ends to form a shittable vtrame together with them,vertically movable types in said superposedledges', springs supported bythe lower ot these ledges and being each connected at its upper end withone type so as to support it resiliently in such a way that the upperend of the type is above the upper surface ot' the upper of saidsuperposed ledges and the lower end of the type, i. e. the type proper,is below the lower surface ot the lower of the said superposed ledges,an inking band below said types, intermittently shiftable slides uponthe stationary tra-me, and a key lever on said slides, as set toi-th.

4. A type-writing machine, comprising, in combination, two edge-wiserarranged horizontal parallel spaced ledges, bows connecting them attheir ends to torni a stationary Vtrame t'ogether with them, ashilitable trame located between said ledges, and resiliently supportedvertical types in this trame, an inking band below said types,intermittently .fhit'table slides upon the stationary trame, a key leveron said slides, an 'intermittently acting checking device connectedwilli said lever and said slides and being adapted to eiilect theintermittent motion of the latter when the said lever has beendepressed, as set forth.

5. A type-writing machine, comprising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary trame together with them, a shittable'trame located between said ledges, and resiliently supporte-d verticaltypes in this frame, an inking band below said types, interniittentlyshiftable slides upon the stationary frame, a key lever on said slides,an intermittently acting checking device comprising a lever pivoted tothe rear slide, a` pawl pivoted to the tree end of this lever and beingrestricted in its motion, a spring so arranged at said slide as to beadapted to draw the pawl npwards, and means adapted to be engaged by,and cooperating with, the pawl so as to effect the intermittent motionot the slides when the said lever has been depressed, as set forth.

6. A type-writing machine, comprising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary 'iframe together with them, a horizontalrack having its teeth at its rear rim and being connected with the rearledge, a shiiftable frame located between said ledges, and resilientlysupported vertical types in this trame, an inking band below said types,intermittently shiftable slides upon the stationary trame, a key leveron said slides, an intermittently acting checking device comprising alever pivoted to the rear slide, a pawl pivoted to the tree end of thislever and being restricted in its motion and adapted to engage, andcooperate with, said rack teeth so as to effect the intermittent motionoi'l the slides.

7. A type-writing machine, comprising, in combination` two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary trame together with them, a shit'tabletrame located between said ledges, and resiliently supported verticaltypes in this frame, an inking band below said types, intermittentlyshiftable slides upon the stationary trame, a key lever on said slides,an intermittently acting checking' device comprising a lever pivoted tothe rear slide, a pawl pivoted to the tree end ot this lever and beingrestricted in its motion, a spring so arranged at said slide as to beadapted to draw the pawl upwards, means adapted to be engaged by, andco-operating with, the pawl so as to eiiect the .intermittent motion ofthe slides when the key lever has been depressed, an upwardly extendingbar hinged at its lower end to the pawl-carrying lever, a knob on thenpper end ot this bar, and a transverse pin therethrough, this pin beinglocated below the key levers-o to be actuable tliereby, as set forth.

8. A, type-writing machine, comprising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to Jform a stationary frame together with them, a shittabletrame located between said ledges, and resiliently supported verticaltypes in this trame` an inking band below said types, intermittentlyshittable slides upon the stationary trame, a key lever on said slides,an intermittently acting checking device comprising a lever pivoted tothe rear slide, a pawl pivoted to the free end oi" this lever and beingrestricted in its motion, a spring so arranged at said slide as to beadapted to draw the pawl upwards, means adapted to be engaged by, andco-operating with, the pawl so as to effect the intermittent motion ofthe slides when the key lever has been depressed.l an upi 'ardlyextending barhinged at its lower end to the pawl-carrying lever, a knobon the upper end of this bar, a transverse pin therethrough, this pinbeing located below the key lever so as to be actuable thereby, andanother key lever arranged on the slides at the side of thehist-mentioned key lever and being also adapted to act on the transversepin when being depressed, as set forth.

9. A type-writing machine, comprising, in combination, two edge-wisearranged horizontal parallel'spaced ledges, bows connectstricted in itsmotion, a spring so arranged at said slide as to be adapted to draw thepawl upwards, means adapted to be engaged by, and (zo-operating with,the pawl so as toeffect the intermittent motion of vthe slides when thekey lever has been depressed, an upwardly extending bar hinged at itslower end to the pawl-carrying lever, a knob on the upper end of thisbar, a transverse rpin therethrough, this pin being located below thekey lever so as to be actuable thereby, and another key leverarr-'angedo'n `the slides at the side of the ,firstmentioned key leverand being also adapted to act on the transverse pin when beingdepressed, and downwardly kextending pins at the two key levers, thepinof the iirstmentioned key lever being adapted to enter the co'g gaps atthe front rim of the cogged ledgeand the pins of the second key leverbeing vadapted to enter the cog-gaps at the rear rim of said ledge, asset forth.

10, A typewriting machine, comprising, in combination, two edge-wisearranged horizontal lparallel spaced ledges, bows connecting them attheir endsto form a stationa'r f frame together with them, twosuperposed spaced horizontal ledges arranged between the ledges ot saidstationary frame, and members connecting said other ledgesat their endsto form a shiftable frame together withthem, the rear rim of the upperledge forming a rack, and resiliently supported vertical types iny thisframe, an inking band below said types, intermittently shiftable slidesupon the stationary frame, a ledge forming a rack at its front rim and arack at its rear rim and being so arranged and supported that the gapsof the front rack lie over the gaps of the first-mentioned rear rack,key levers attached to said slides and downwardy eX- tending pins atsaid levers, the pin of one thereof being adapted to enter into thesuperposed gaps, and the pins of the other key lever being adapted toenter into the rear gaps of the last-mentioned ledge, as set forth. i

11. A type-writing machine, comprising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bo-ws connecting them attheir ends to forni a stationary frame together with them, two

superposed spaced `horizontal ledges arranged between the ledges ofsaidstationary frame, and members connecting said other ledges at their`ends to form a shiftable frame 'together with them, vertically mov!lable types in said superposed ledges, a foot carrying the stationaryframe with the therein housed movable one, hinges by which thestationary frame is connected y with said toot and which are located atthe-1xv rear thereof, intermittently shiftable slides upon thestationary frame, and a key lever on said slides, as set foth.

l2. A type-writing machine, comprising, in combination. two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary frame together with them, two superposedspaced horizontal ledges arranged between the ledges of said stationaryvframe, and members connecting said other ledges at their ends to form ashiftableframc together with them, vertically movable types in saidsuperposed ledges", a foot carrying the stationary frame vwith' thetherein yhoused movable one, hinges ,l rby which the stationary frame isconnected with said foot and which are located at the rear thereof, aplurality of rolls at the front of the foot, a roller located above saidrollsA and extending parallelly along the said ledges, rings on thisroller and located above the said rolls so as to be apt to co-operatewith them, and an i'nking band below the said types, as set forth.

13. A type-writing machine, comprising.r in combination, two edge-wisekarranged horizontal parallel spaced ledges, bows connesting them attheir ends to form a sta tionary frame together with them, two s\1perposed spaced horizontal ledges arranged between the ledges of saidstationary frame.

and members connecting said other ledges at their en'dsto form ashiftable frame together with them, vertically movable types in saidsuperposed ledges, a foot carrying the stationary frame with the thereinhoused movable one, hinges bywhich the stationary frame is connectedwith said foot and which are located at the rear thereof, a plurality ofrolls at the front of the foot. a roller located above said rolls andextending parallelly along the said ledges, rings on this roller andlocated above the said rolls so as to be apt to cooperate with them,spring carrying the roller and pressing its rings against the rolls, andan inking band below the said types, as set forth.

1li. A type-writing machine comprising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary frame together with them, two superposedspaced horizontal ledges arranged between the ledges of said stationaryframe,

and members connecting said other ledges at their ends to form ashiftable trame together with them, vertically movable types in saidsuperposed ledges, a foot carrying the stationary frame with the thereinhoused movable one. hinges by which the stationary frame is connectedwith said toot and which are located at the rear thereof, indentationsat one end ot the roller, and springs adapted to engage saidindentations, and an inking band belowthe said types, as set forth.

l5. A type-writing machine, comp-rising, in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary iframe together with them, twosuperposed spaced horizontal ledges arranged between the ledges ot' saidstationary frame, and members connecting said other ledges at their endsto form a shiftable frame together with them, vertically movable typesin said superposed ledges, springs supported by the lower ot theseledges and being each connected at its upper end with one type so as tosupport it resiliently in such a way that the upper end ot the type isabove the upper surface of the upper of said superposed ledges and thelower end of the type, i. e. the type proper, is below the lower surfaceof the lower of the said superposed ledges, horizontal members attachedto said spaced ledges at their ends and being tapered in the directiontowards the connect-ions between the said springs and the springskeeping them raised, an inking band below said types,` intermittentlyshiftable slides upon the stationary trame, and a key lever on saidslides, as set forth.

16. A type-writing machine, comprising. in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to vform a stationary trame together with them, a shiftableframe located between said ledges, and a plurality of rows ofresiliently supported vertical types in this frame, an inking band belowsaid types, intermittently shittable 18. A. type-writing machine,comprisinfr,

in combination, two edge-wise arranged horizontal parallel spacedledges, bows connecting them at their ends to form a stationary iframetogether with them, a longitudinally shiitable trame located betweensaid ledges, a transversely shittable plate in said trame, and aplurality of rows of resiliently supported types in said plate. means toshift said plate transversely, an inlting band below said types,intermittently shiftable slides upon the stationary trame, and a keylever on said slides, as set forth.

19. A type-writing machine, comprising. in combination, two edge-wisearranged horizontal parallel spaced ledges, bows connecting them attheir ends to form a stationary trame together with them, alongitudinally shiftable frame located between said ledges, atransversely shiftable plate in said trame, and a plurality of rows ofresilient-ly supported types in said plate,'a shaft below said plate, aconnection between the latter and said shaft, an arm with a button on anoutwardly projecting end ot the said shaft, an inking band below saidtypes, intermittently shiftable slides upon the stationary trame. and akey lever on said slides, as set forth.

ln testimony whereof I aiiix my signature in presence of two witnesses.

` KARL DIETRICH.A lVitnesses RUDOLPH FRICKE, v ALFRED ZUCGKLER.

